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Commit Graph

15298 Commits

Author SHA1 Message Date
Russ Cox
86d509b463 runtime: preparation for non-Go threads running Go code
* Handle p==nil in signalstack by setting SS_DISABLE flag.
* Make minit only allocate a signal g if there's not one already.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/7323072
2013-02-18 13:43:12 -05:00
Russ Cox
07e87885ad cmd/6c: fix build
copy+paste error while cleaning up CL 7303099 before submit

R=ken2
CC=golang-dev
https://golang.org/cl/7308104
2013-02-18 13:29:55 -05:00
Russ Cox
139448fe95 cmd/6c, cmd/8c: cut stack frames by about half
The routine that adds an automatic to the stack was
adding ptrsize-1 to the size before rounding up.
That addition would only make sense to turn a round down
into a round up. Before a round up, it just wastes a word.

The effect was that a 6c function with one local and
one two-word function call used (8+8)+(16+8) = 40 bytes
instead of 8+16 = 24 bytes.

The wasted space mostly didn't matter, but one place where
it does matter is when trying to stay within the 128-byte
total frame constraint for #pragma textflag 7 functions.

This only affects the C compilers, not the Go compilers.

5c already had correct code, which is now copied to 6c and 8c.

R=ken2
CC=golang-dev
https://golang.org/cl/7303099
2013-02-18 13:24:04 -05:00
Dmitriy Vyukov
d62239b5f6 runtime/debug: make TestFreeOSMemory repeatable
Fixes #4835.

R=golang-dev, fullung
CC=golang-dev
https://golang.org/cl/7319050
2013-02-18 15:46:36 +04:00
David Symonds
8ecc4cb41e misc/vim: update installation instructions to work better with some Linux distributions.
Fixes #3308.

R=golang-dev, minux.ma
CC=golang-dev
https://golang.org/cl/7301086
2013-02-18 14:03:47 +11:00
Volker Dobler
6bbd12f176 exp/cookiejar: make cookie sorting deterministic.
Re-enable TestUpdateAndDelete, TestExpiration, TestChromiumDomain and
TestChromiumDeletion on Windows.

Sorting of cookies with same path length and same creation
time is done by an additional seqNum field.
This makes the order in which cookies are returned in Cookies
deterministic, even if the system clock is manipulated or on
systems with a low-resolution clock.

The tests now use a synthetic time: This makes cookie testing
reliable in case of bogus system clocks and speeds up the
expiration tests.

R=nigeltao, alex.brainman, dave
CC=golang-dev
https://golang.org/cl/7323063
2013-02-18 11:27:41 +11:00
Joel Sing
556dd0bfbd runtime: fix sigaction struct on freebsd
Fix the sa_mask member of the sigaction struct - on FreeBSD this is
declared as a sigset_t, which is an array of four unsigned ints.
Replace the current int64 with Sigset from defs_freebsd_GOARCH, which
has the correct definition.

Unbreaks the FreeBSD builds.

R=golang-dev, dave, minux.ma
CC=golang-dev
https://golang.org/cl/7333047
2013-02-18 03:23:29 +11:00
Rémy Oudompheng
23093f86ee strings: better mean complexity for Count and Index.
The O(n+m) complexity is obtained probabilistically
by using Rabin-Karp algorithm, which provides the needed complexity
unless exceptional collisions occur, without memory allocation.

benchmark                 old ns/op    new ns/op    delta
BenchmarkIndexHard1         6532331      4045886  -38.06%
BenchmarkIndexHard2         8178173      4038975  -50.61%
BenchmarkIndexHard3         6973687      4042591  -42.03%
BenchmarkCountHard1         6270864      4071090  -35.08%
BenchmarkCountHard2         7838039      4072853  -48.04%
BenchmarkCountHard3         6697828      4071964  -39.20%
BenchmarkIndexTorture       2730546        28934  -98.94%
BenchmarkCountTorture       2729622        29064  -98.94%

Fixes #4600.

R=rsc, donovanhide, remyoudompheng
CC=golang-dev
https://golang.org/cl/7314095
2013-02-17 13:07:17 +01:00
Georg Reinke
f1037f0e86 runtime: fix build on openbsd
R=golang-dev, jsing
CC=golang-dev
https://golang.org/cl/7312104
2013-02-17 02:06:59 +11:00
Mikio Hara
c02d18ab34 net: add IPConn through Conn test
Also refactors mock ICMP stuff.

R=dave, rsc
CC=golang-dev
https://golang.org/cl/7325043
2013-02-16 12:55:39 +09:00
Dave Cheney
21327e1970 runtime: fix unused variable warning
R=rsc, dvyukov
CC=golang-dev
https://golang.org/cl/7312103
2013-02-16 14:32:04 +11:00
Russ Cox
60526ca6d1 undo CL 7310096 / 59da6744d66d
broke windows build

««« original CL description
runtime: ensure forward progress of runtime.Gosched() for locked goroutines
The removed code leads to the situation when M executes the same locked G again and again.
Fixes #4820.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/7310096
»»»

TBR=dvyukov
CC=golang-dev
https://golang.org/cl/7343050
2013-02-15 17:54:46 -05:00
Russ Cox
c92d3552e5 os: point users of ProcessState.SysUsage to getrusage(2)
R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/7352044
2013-02-15 17:11:13 -05:00
Russ Cox
6d888f1e1b build: clang support
This works with at least one version of clang
that existed at one moment in time.
No guarantees about clangs past or future.

To try:
        CC=clang all.bash

It does not work with the Xcode clang,
because that clang fails at printing a useful answer
to:
        clang -print-libgcc-file-name
The clang that works prints a full path name for
that command, not just "libgcc.a".

Fixes #4713.

R=iant, minux.ma
CC=golang-dev
https://golang.org/cl/7323068
2013-02-15 13:37:43 -08:00
Russ Cox
428c4cc8d4 api: refresh next.txt
R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/7317049
2013-02-15 16:33:14 -05:00
Russ Cox
0c3b17a55a runtime: allow mem profiles with GOGC=off
Fixes #3586.

R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/7304098
2013-02-15 14:48:58 -05:00
Russ Cox
6c1539bb01 runtime: show frame pointer values during throw
Should help if stack overflows start happening again.

Fixes #3582.

R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/7311098
2013-02-15 14:48:47 -05:00
Russ Cox
c8214c78bd runtime: make return from main wait for active panic
Arguably if this happens the program is buggy anyway,
but letting the panic continue looks better than interrupting it.
Otherwise things like this are possible, and confusing:

$ go run x.go
panic: $ echo $?
0
$

Fixes #3934.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/7322083
2013-02-15 14:48:35 -05:00
Russ Cox
2d4164596f cmd/go: reject case-insensitive file name, import collisions
To make sure that Go code will work when moved to a
system with a case-insensitive file system, like OS X or Windows,
reject any package built from files with names differing
only in case, and also any package built from imported
dependencies with names differing only in case.

Fixes #4773.

R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/7314104
2013-02-15 14:39:39 -05:00
Russ Cox
61e02ee901 spec: clarify when range x does not evaluate x
Fixes #4644.

R=r, adonovan
CC=golang-dev
https://golang.org/cl/7307083
2013-02-15 14:39:28 -05:00
Russ Cox
318309a51f runtime/pprof: adjust reported line numbers to show call sites
This is the same logic used in the standard tracebacks.
The caller pc is the pc after the call, so except in the
fake "call" caused by a panic, back up the pc enough
that the lookup will use the previous instruction.

Fixes #4150.
Fixes #4151.

R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/7317047
2013-02-15 14:27:16 -05:00
Russ Cox
8a6ff3ab34 runtime: allocate heap metadata at run time
Before, the mheap structure was in the bss,
but it's quite large (today, 256 MB, much of
which is never actually paged in), and it makes
Go binaries run afoul of exec-time bss size
limits on some BSD systems.

Fixes #4447.

R=golang-dev, dave, minux.ma, remyoudompheng, iant
CC=golang-dev
https://golang.org/cl/7307122
2013-02-15 14:27:03 -05:00
Dmitriy Vyukov
f87b7f67b2 runtime: ensure forward progress of runtime.Gosched() for locked goroutines
The removed code leads to the situation when M executes the same locked G again and again.
Fixes #4820.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/7310096
2013-02-15 22:22:13 +04:00
Russ Cox
d3d89ae7d2 runtime: check rt_sigaction return values on linux
(If the mask size is wrong the system call fails.)

R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/7305097
2013-02-15 13:13:19 -05:00
Russ Cox
2b9787c2f3 encoding/binary: make type error more specific
Right now it says 'invalid type S' for a struct type S.
Instead, say which type inside the struct is the problem.

Fixes #4825.

R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/7301102
2013-02-15 13:12:28 -05:00
Russ Cox
d47cc872b5 exp/cookiejar: fix windows/386 build
More mysteriously broken tests.

TBR=nigeltao
CC=golang-dev
https://golang.org/cl/7342048
2013-02-15 12:43:28 -05:00
Russ Cox
c7f7bbbf03 runtime: fix build on linux
In addition to the compile failure fixed in signal*.c,
preserving the signal mask led to very strange crashes.
Testing shows that looking for SIG_IGN is all that
matters to get along with nohup, so reintroduce
sigset_zero instead of trying to preserve the signal mask.

TBR=iant
CC=golang-dev
https://golang.org/cl/7323067
2013-02-15 12:18:33 -05:00
Russ Cox
f8f2727ab5 exp/cookiejar: fix windows builder
TBR=nigeltao
CC=golang-dev
https://golang.org/cl/7322084
2013-02-15 11:32:31 -05:00
Russ Cox
f3407f445d runtime: fix running under nohup
There are two ways nohup(1) might be implemented:
it might mask away the signal, or it might set the handler
to SIG_IGN, both of which are inherited across fork+exec.
So two fixes:

* Make sure to preserve the inherited signal mask at
minit instead of clearing it.

* If the SIGHUP handler is SIG_IGN, leave it that way.

Fixes #4491.

R=golang-dev, mikioh.mikioh, iant
CC=golang-dev
https://golang.org/cl/7308102
2013-02-15 11:18:55 -05:00
Adam Langley
5b20a18f3b crypto/x509: support IP SANs.
Subject Alternative Names in X.509 certificates may include IP
addresses. This change adds support for marshaling, unmarshaling and
verifying this form of SAN.

It also causes IP addresses to only be checked against IP SANs,
rather than against hostnames as was previously the case. This
reflects RFC 6125.

Fixes #4658.

R=golang-dev, mikioh.mikioh, bradfitz
CC=golang-dev
https://golang.org/cl/7336046
2013-02-15 10:40:17 -05:00
Dmitriy Vyukov
a9824f178d runtime: fix debug output
R=golang-dev, minux.ma
CC=golang-dev
https://golang.org/cl/7312101
2013-02-15 17:04:02 +04:00
Alex Brainman
d844001601 mime: do not test for .wav on windows
Even builders don't have that mime type

R=golang-dev, dave, rsc
CC=golang-dev
https://golang.org/cl/7314106
2013-02-15 16:55:51 +11:00
Alex Brainman
f9dbbdb1d3 mime: use .wav instead of .bmp during windows tests
Some systems do not have .bmp mime.

Update #4723.

R=golang-dev, bradfitz, dave
CC=golang-dev
https://golang.org/cl/7326047
2013-02-15 15:52:54 +11:00
Alex Brainman
d71b3921f7 net: delete TestDialTimeoutHandleLeak
It is too flaky. Tried to make it more reliable,
but that affects other tests (they run too long),
because we do unusual things here, like attempting
to connect to non-existing address and interrupt.

R=golang-dev, bradfitz, mikioh.mikioh
CC=golang-dev
https://golang.org/cl/7314097
2013-02-15 15:52:12 +11:00
Alan Donovan
e49f945603 runtime: expand error for signal received on non-Go thread.
We call runtime.findnull dynamically to avoid exceeding the
static nosplit stack limit check.  (Thanks minux!)

Fixes #4048.

R=rsc, minux.ma, ality
CC=golang-dev
https://golang.org/cl/7232066
2013-02-14 23:37:14 -05:00
Cosmos Nicolaou
c5b4292eb3 cmd/godoc: add support for doc.Package.Notes
Add support for displaying the notes of the form 'MARKER(userid): comment' now collected by the go/doc package. Any two or more uppercase letters are recognised as a marker.

R=gri, rsc, bradfitz
CC=golang-dev
https://golang.org/cl/7334044
2013-02-14 20:35:08 -08:00
Cosmos Nicolaou
d0f3475fda go/doc: add support for arbitrary notes
Add support for arbitrary notes of the form // MARKER(userid): comment
in the same vein as BUG(userid): A marker must be two or more upper case [A-Z] letters.

R=gri, rsc, bradfitz, jscrockett01
CC=golang-dev
https://golang.org/cl/7322061
2013-02-14 20:20:32 -08:00
Oling Cat
aecbcd0914 doc/contribute: fix some tags, remove extra space.
R=golang-dev, adg
CC=golang-dev
https://golang.org/cl/7327048
2013-02-15 14:01:12 +11:00
Anthony Martin
f2c3122307 cmd/ld: fix -s flag for ELF executables
This fixes a regression introduced in changeset 98034d036d03
which added support for producing host object files.

R=rsc, minux.ma
CC=dave, golang-dev
https://golang.org/cl/7307107
2013-02-14 18:43:54 -08:00
Rémy Oudompheng
7c5bd322d5 log/syslog: fix channel race in test.
R=golang-dev, minux.ma, iant, bradfitz, dave
CC=golang-dev
https://golang.org/cl/7314057
2013-02-15 11:07:31 +11:00
Dave Cheney
ea0292c61b misc/dashboard/builder: record build result on dashboard
This is part one of two changes intended to make it easier to debug builder failures.

runOutput allows us to control the io.Writer passed to a subcommand. The intention is to add additional debugging information before and after the build which will then be capture and sent to the dashboard.

In this proposal, the only additional information is the build status. See http://build.golang.org/log/e7b5bf435b4de1913fc61781b3295fb3f03aeb6e

R=adg
CC=golang-dev
https://golang.org/cl/7303090
2013-02-15 10:44:29 +11:00
Carl Shapiro
817a3f39fd src/cmd/gc: fix some typos in the escape analysis comments
R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/7342044
2013-02-14 15:38:57 -08:00
Robert Griesemer
5b1885c241 go/parser: cleanups following CL 7307085
- use the new AllErrors flag where appropriate
- unless AllErrors is set, eliminate spurious
  errors before they are added to the errors list
  (it turns out that reporting spurious errors always
  leads to too many uninformative errors after all)

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/7323065
2013-02-14 13:36:40 -08:00
Robert Griesemer
8e2b0e1cb8 C: add Cosmos Nicolaou (Google CLA)
R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/7314103
2013-02-14 13:35:52 -08:00
Daniel Morsing
38244018ce cmd/gc: remove node printing in redeclare errors
I suspect this is some debugging which got through the submission process.

Fixes #4789.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/7310079
2013-02-14 21:11:47 +01:00
Dmitriy Vyukov
6a828482fa runtime: add more tests for LockOSThread()
Just test some additional paths through the scheduler.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/7331044
2013-02-15 00:02:12 +04:00
Russ Cox
11884db3d7 cmd/go: fix vet
The IgnoredGoFiles are already listed in allgofiles,
so they were being run twice. Worse, the ones in
IgnoredGoFiles are not fully qualified paths, so they
weren't being found when executed outside the
package directory.

Fixes #4764.

R=golang-dev, minux.ma, franciscossouza
CC=golang-dev
https://golang.org/cl/7308049
2013-02-14 15:00:51 -05:00
Russ Cox
30359a55c2 encoding/json: document and test use of unicode.ReplacementChar
Fixes #4783.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/7314099
2013-02-14 14:56:01 -05:00
Russ Cox
31072e41f4 cmd/gc: replace x*8 by x<<3 etc
Fixes #4199.

R=ken2
CC=golang-dev
https://golang.org/cl/7322081
2013-02-14 14:54:00 -05:00
Russ Cox
ac1015e7f3 cmd/8g: fix sse2 compare code gen
Fixes #4785.

R=ken2
CC=golang-dev
https://golang.org/cl/7300109
2013-02-14 14:49:04 -05:00